“Primal” is episode nine of season one of Eureka.
The dog Lojack, who I don’t think has been seen since “Pilot”, and who apparently has an IQ of 130, has been hit by a car, and Carter ends up taking him to Taggart for a cure. Even though Taggart has been trying to catch Lojack for some time. The cure involves nanobots that are based on the research of the scientist in “Invincible”. The cure works; unfortunately, Taggart fails to secure the nanobots container properly. Which results in them going walkabout.
Fargo is testing a new brain/computer interface on Stark. This results in the nanobots mentioned starting to follow Stark’s subconscious dreams. Which results in a whole host of Starks made from nanobot aggregations on the loose.
They have to be stopped before they escape. Otherwise the entire world may be taken over by nanobot Starks.